problem solving

nitesh009 · nitesh009 · commit 2da8080cc3b2 · 2018-07-19T20:15:15.000+05:30
diff --git a/python-problem-solving/removeNo.py b/python-problem-solving/removeNo.py
@@ -0,0 +1,31 @@
+'''
+Given an array nums and a value val, remove all instances of that value in-place and return the new length.
+
+Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory.
+
+The order of elements can be changed. It doesn't matter what you leave beyond the new length.
+
+Example 1:
+
+Given nums = [3,2,2,3], val = 3,
+
+Your function should return length = 2, with the first two elements of nums being 2.
+
+It doesn't matter what you leave beyond the returned length.
+
+'''
+
+
+class Solution(object):
+    def removeElement(self, nums, val):
+        """
+        :type nums: List[int]
+        :type val: int
+        :rtype: int
+        """
+        j = 0
+        for n in nums:
+            if n != val:
+                nums[j] = n
+                j += 1
+        return j
